DE19753690A1 - Disc gripping mechanism for compact disc player - Google Patents

Abstract

The compact disc (CD) player has a magazine 1 which includes several storage locations 11 for the discs 12. The player has a chassis 2 and within this there is an arm unit 9 that supports a drive spigot clamping arrangement 552,553. The arm can be moved vertically and horizontally into the gap between the disc holders to access a selected disc. Once the disc is engaged the pick up head 56 can be operated. The arm element is such as to be able to project into the central hole of the CD.

Description

The present invention relates to a CD player with egg magazine in which a number of CDs were stacked are to select any CD from the number of CDs len and play and a CD tensioning mechanism that for the use in the CD player is suitable.

An example of such a conventional CD player is one that is designed so that a plate on which the CD is placed on the back and front or on the side is used to pull the CD out of the magazine and around the plate above or below the scanning stone position in a player body, and the CD on the plate is held by a CD clamping mechanism, which is provided in the player body, clamped to to turn the CD.

In the conventional construction, however, a space for Pull the CD out of the magazine on the side of the CD player be ensured, and this space increases the size of the CD player.

Therefore, a construction is considered in which Plates, on which there is a CD, in stages above and below a plate with the selected CD be separated up and down without the Plate on which the selected CD rests has been moved is, and an assembly with a scanner  is equipped, and a CD clamping mechanism are in one Magazine moved to clamp the selected CD.

It follows that a CD player with such a Kon structure compared to the CD player with the construct tion where the selected CD is pulled out and played can be miniaturized because the need Allowing space for pulling out the CD is eliminated.

The common CD tensioning mechanism has a rotating one driving part, driven by a motor rotating is, and a rotatably driven part for pressing the CD from above and enters a central hole in the CD from down here. The thickness of the CD clamping mechanism with one such construction is increased because of the rotatable driven part for pressing the CD from above is required.

If the clamping mechanism described above for a CD player is used, which has the construction where the plates on which the CDs are placed are separated from each other upwards and downwards the distance between the separated plates increases where is increased by the thickness of the CD player, or it will the number of CDs that are inserted in the magazine can, lowered.

Japanese patent publication 157 859/1991 discloses a CD tensioning mechanism with a construction, the Thickness is reduced. The mechanism has a CD table, on which a CD with a central hole hen is deposited by a rotary drive mechanism is rotated, with a fastener that is in the The center of the CD table is arranged in the central hole the CD fits, and a number of spherical elements that are arranged so that they are in the fastener pulled and in the Rich protruding on the fastener  tion are biased by an elastic element to press the CD on the table against the table and hold. It should be noted that the CD clamping mechanism with such a construction in the above Construction is built in, in which the plates from one others are separated up and down.

In the open in the above publication beard mechanism must however have an inner side surface of the middle hole of the CD ge over the spherical elements long to stretch the CD. For this purpose, one Force to temporarily press the CD against the table conducive. In the construction in which the magazine ver the force cannot be exerted by a person be practiced. Hence the power must go through some mecha be exercised. If such a construction is newly built, the construction of the CD Spannme mechanism complicated.

Furthermore, in the CD player that has the construction, where the plates in the magazine face upwards and downwards an arm to hold and move the CD tensioning mechanism provided to move the CD tensioning mechanism in a separate state (play time) in the middle Position the CD hole and in a non-separated pull out the state (non-playing time) from the CD. In this case the length of the arm is greater than the radius the CD. In addition to the CD tensioning mechanism a scanning device on the arm and its movement mechanism mus worn. The CD will continue to play during playback hung up. If a mechanism to turn the arm through Bearing the shaft provided at one end thereof is used, the arm is slightly inclined when the CD is launched. If the amount of lifting the CD for the In case the CD is lifted off the plate, it may be small the CD can be brought into contact with the turntable.  

Furthermore, the arm vibrates slightly because it is one-sided device. If the vibration due to the occurrence of Re sonance increases, the focus and lane alignment be disturbed in the scanner.

In view of the above, it is the task of the present invention, a CD tensioning mechanism with to create a small thickness and simplified construction, by a driving force for tensioning and unclamping ner CD is obtained from the existing mechanism to the reliability of a CD player with a construct tion, in which the plates in a magazine follow each other be separated above and below to improve.

According to the invention, this object is achieved by a CD clamping mechanism, which is characterized in that a Clamping element is provided so that it egg on the top protruding and retracting the CD table, whereby the table is rotated to rotate in front by rotary drive means a CD through its central hole tension while the CD is being pulled where it is pulled during the clamping / unclamping process synchronized with the movement direction for moving a scanner.

In the construction described above, this is Claw or clamp element on the top of the CD table before and is drawn in to the CD to tension so that the need for a driven Part for pressing the CD is removed from above, which makes it is possible to make the CD clamping mechanism thin. A force for bracing and tensioning is given by the tensioning element through the existing scanner movement device tion exercised, which means the construction of the CD clamping mechanism nism compared to the construction where separated a mecha from the scanner mover  is provided to a driving force for guy and exerting tension is simplified.

In particular, a CD clamping mechanism has a CD table, on which a CD with a central hole hen is placed, the ge by rotary drive means rotates, a clamping element which is designed such that protrude it at the top of the CD table and retracted can be used to project the CD through the central hole tension while the CD is tensioned when it is pulled in is a movable clamping part that runs along the Rotati axis of the CD table is slidable to cause that the clamping element protrudes by moving and turned is pulled, biasing means that the movable clamping part in preload the direction in which the clamping element stands, a movement device for the scanning device and a tension control mechanism that is moved when it is by a pressing element, which is in the scanner to egg ner position is provided where the scanner is close the CD table is pressed around the movable clamp ment in the direction in which the Retracts the clamping element.

In a CD player with a magazine that has a number of Has plates in which a number of CDs at the same time is an arm for the scanner or the pickup with a CD table, a CD clamping device mechanism and a pickup, where An means drive the movement of the pickup arm and Plate release agent move the plates up and down, to enter a state in which the pickup The CD player is easy to enter the magazine characterized according to the present invention, that he has vibration control to get the CD under half of the pickup arm in sync with the movement of the sound  arms towards the plates (towards the posi tion to play).

With this construction, even in such cases such as in the case where the CD player as one Vehicle equipment is used, possible in situations too prevent in which the CD below the Tonabneh is positioned by the vehicle vibration jumps while touching the pickup arm comes because vibration damping means are provided.

In a CD player with a magazine that has a number of Plates on which a number of CDs can be loaded at the same time that are, contains a pickup arm that is connected to a CD table, a CD clamping mechanism and a pickup is permitted to use movement drive means for driving the loading movement of the pickup arm and plate release agent to move the plate up and down to get in a condition get in which the pickup arm in the magazine egg nes CD player can occur, according to the present Er This is characterized by the fact that on a Side part of each of the plates is formed a projection the plate release means having a slide plate, which are slidable forward and backward is, the sliding plate a first sharp edge and has a second sharp edge, and is constructed so that it gradually assumes a first state in which is caused that the first sharp edge by a ver is moved so that it is close to a lower part of the projection of the plate on which the selected CD lies, has been brought, a second Zu stood in which of the plates on which the ge chose CD is stored, and all plates in steps above half of the plate through the first sharp edge into the top the third position in which of the plates on which the selected CD  lies, and all plates in the steps above the plate can be easily lowered from the second state to the ge chose to put Cb on the CD table, and causes the second sharp edge near a lower part of the Projection of the plate of the above step, on wel chem the selected CD is on, brought, and one fourth state, in which the plate, on which chem the selected CD lies slightly out of the third state is lowered to separate the plate from the selected CD while the plate is in the step above the plate through the second sharp edge from the third state is lifted.

With this construction, a process for separating the Plate (allowing the pick-up arm to enter) Process of placing the CD on the CD table, and a pre going to lift the CD from the plate continuously this order can be done by sliding plate is moved in one direction, and the operations who the consecutively in the reverse order leads by sliding the slide plate in the opposite direction tion is moved.

In a CD player with a magazine in which an An number of plates on which a number of CDs equal are loaded in time, a pickup arm that is connected to a CD table, a CD clamping mechanism and a pickup is equipped, rotary drive means for horizontal rotation hen the pickup arm, which is supported at one end to the pickup arm from the position in which it is held is to move to the play position and to move the plates up and down to to reach a state in which the pickup arm in the magazine can enter, the CD player is according to the present invention further characterized by  Damping means for damping the change in position of the cartridge merarms in the play position.

With this construction, it is possible to prevent the pickup arm is tilted at the time of playback or is vibrated.

The foregoing and other tasks, features, aspects and Advantages of the present invention result from the following detailed description of the present invention from the accompanying figures, in which shows:

Figure 1 is a perspective view of the internal structure of a CD player according to the present invention.

Figure 2 is a plan view of a plate according to the present invention.

Fig. 3 is a plan view of a magazine according to the present invention in a state in which the top cover is removed;

FIG. 4A, the magazine of the present invention are not separated from each other in the side view to illustrate a state in which the plates according to, and

FIG. 4B is the magazine of the present invention, the plates are separated from each other in accordance with egg ner side view illustrating a state in wel chem;

Figure 5 shows the magazine according to the present invention in another side view.

Figure 6 is a plan view of the magazine loaded into a player according to the present invention.

Fig. 7 the player of the present invention in egg ner plan view in a state in which the user is a main part shown removed;

Fig. 8A the player according to the present invention in egg ner side view from the right and

8B the player according to the present invention in egg ner left side view.

Fig. 9 shows the player body according to the present inven tion in a plan view;

FIG. 10A is the player main body according to the present OF INVENTION dung in a side view from the right; and

FIG. 10B is a left side view seen the left side face of the right side surface;

FIG. 11A is a schematic representation of a movable plate to plate separation 511 according to the present invention and

FIG. 11B is a schematic diagram of a slidable plate to plate separation 512 according to the present invention;

Fig. 12A is a schematic representation of the plate in a magazine in a first state according to the present invention;

Fig. 12B is a schematic representation of a CD-Spannmecha mechanism in the first state; and

Fig. 12C is a schematic representation of the relationship between a sliding plate and a projection in the first state;

FIG. 13A is a schematic illustration of the plate in a magazine in a second state according to the present invention;

13B is a schematic diagram of a CD-Spannmecha mechanism in the second state. and

FIG. 13C is a schematic representation of the relationship Zvi rule a sliding plate to plate separation and a protrusion in the second state;

FIG. 14A is a schematic illustration of the plate in a magazine in a third state according to the present invention; and

Fig. 14B is a schematic representation of the relationship between a sliding plate for plate separation and a projection in the third state;

FIG. 15A is a schematic illustration of the plate in a magazine in a fourth state according to the present invention; and

Fig. 15B is a schematic illustration of the relationship between a sliding plate for plate separation and a projection in the fourth state;

FIG. 16 is a Tonabnehmearm provided in the player main body according to the present invention, in a top view;

Fig. 17 shows a state in which the pickup arm is rotated toward the magazine from the position shown in Fig. 16, in a plan view;

FIG. 18 is the Tonabnehmerarm according to the present invention in an enlarged view in plan view (in egg nem state in which the disc is worn out);

Figure 19 shows the pickup arm according to the present invention in an enlarged view in plan view (in the state with the CD clamped).

FIG. 20 is a clamping rotation mechanism according to the present invention in section (CD in guyed state);

Fig. 21 shows a clamping rotation mechanism according to the present invention in section (CD in the clamped state);

FIG. 22B is seen a schematic view from above on the underside of a housing containing the Tonabnehmerarm, according to the present invention;

22A is an enlarged view of a main part. and

22C is a sectional view of the main part.

Figure 23 shows the internal structure of a CD player according to the vorlie invention with a mechanism for preventing the vibration of the pickup arm in perspective presen- tation.

FIG. 24 is a top view of the pickup arm according to FIG. 23;

FIG. 25 shows the pickup arm in a state in which it is rotated towards the magazine from the position shown in FIG. 24, in a plan view;

FIG. 26 shows the pickup arm according to FIG. 23 (CD removed) in an enlarged illustration in a top view; FIG.

(Tensioned CD) Figure 27 shows the Tonabnehmerarm according to Fig 23 in an enlarged representation of the top view)..;

Fig. 28 shows a mechanism in the present invention in section to prevent the pickup arm from swinging.

Based on the figures, embodiments of the described the present invention.

A schematic description is now given on the basis of the perspective illustration according to FIG. 1. A CD player according to the present embodiment has a magazine 1 and a player part 2 . While playing, magazine 1 is loaded into player part 2 . The magazine 1 is provided with four plates 11 . A CD 12 can be recorded on each plate 11 . Each of the plates 11 is provided so that it cannot slide together with an upper cover (not shown), but can be moved up and down.

The player part 2 has a player chassis 3 , a lifting mechanism 4 and a main player part 5 . In the front loading area of the player chassis 3 is, for Transd men of the magazine 1 provided a receiving space, and the player main body 5 is arranged behind the receiving space of the chassis. 3

When the magazine 1 is loaded into the player part 2 to perform a CD selection operation, the player main part 5 is moved up and down by the lifting mechanism 4 and stopped in a position corresponding to the selected CD. Slidable plates for the plate separation 51 ( 511 , 512 ) provided on both sides of the player main part 5 are advanced, and the plate 11 on which the selected CD 12 lies and all plates 11 in the steps above the plate 11 are replaced by a plate first sharp edge 51 a raised. Thereafter, a Tonabnehmerarm 500, which is accommodated in the player main body 5, hori zontal is rotated and a clamping rotation mechanism 55, which is arranged on egg nem end of Tonabnehmerarms 55 is tioniert posi below a central bore 12 a of the selected CD 12th Furthermore, the slidable plates for the plate separation 51 are advanced further. It follows that the plate 11 on which the selected CD 12 is placed is lowered so that the CD 12 is placed on a CD table 552 in the clamping-rotating mechanism 55 by means of a second sharp edge 51 b, and the selected one CD 12 is clamped in the central bore 12 a by a clamping claw 553 in the clamping rotating mechanism 55 . The plate 11 is moved downward from the selected CD 12 and the plate 11 in the step above the plate 11 is separated from the selected CD 12 by pressing upwards. Thereafter, a pickup 56, which is seen in the prior Tonabnehmerarm 500 is moved along the radius of the CD 12 to 12 infor mation in a predetermined position to read the CD.

The respective modules are described in detail.

Fig. 2 is a plan view of the table 11. In the plate 11 , a cutout 11 d is formed in a shape corresponding to the range of rotation or the like of the pickup arm 500 , a fan-shaped incision 11 g and guide holes 11 e and 11 f for guiding the lifting movement. Furthermore, with Ab was each other, a pin 11a and a pin 11b at one edge on the bottom side in Fig. 2 seen (the right side of the CD player) is formed, and at an edge at the top of Fig. 2 ( left side of the CD player) a pin 11 c is formed. The pins 11 a, 11 b and 11 c who operated by the sliding plates for plate separation 51 ( 511 , 512 ). Furthermore, the lengths with which the pin 11 a and the pin 11 b protrude are of different sizes. The pins 11 a and 11 b can accommodate an actuating force for the sliding plate for the plate separation 51 ( 511 ). The projections 11 h, 11 h and 11 h are formed in the same way as 11 a, as 11 b and 11 c, but on the upper cover of the magazine 1 (see FIGS. 4 and 5).

Figure 3 is a top view of the magazine 1 with the top cover removed. At a position on the bottom plate 15 of the magazine 1 and in accordance with the incision 11 g in the shape of a fan, a CD ejection device 14 is easily seen. The CD ejection device 14 has an ejection lever 14 a for pressing a rear part of the CD 12 by turning and a spring 14 b for biasing the ejection lever 14 a in the direction of the non-ejection side. The steps for supporting the CD 12 are formed in a vertical part 15 e on the back of the base plate 15 (see FIGS. 1, 4 and 22). An upper cover (not shown) is moved up and down when the plate 11 is moved up and down. On the base plate 15 elements 15 a and 15 b are provided to limit the separation in order to prevent vertical movement, ie separation, from taking place in a state in which the magazine 1 is separated from the player part 2 .

The separation limiting elements 15 a and 15 b are each rotatable in the directions indicated by arrows by means of the shafts 152 a and 152 b. In a state in which limitation chips 151 a and 151 b are positioned as in FIG. 3, the vertical movement of the upper cover is limited. If the magazine 1 is loaded into the player part 2 , the separation delimitation elements 15 a and 15 b are rotated, so that the limitation of the separation is released by the delimitation chips 151 a and 151 b, as is shown in FIG. 6 ge. Additional explanations will be given later. The magazine 1 has parallel lifting aids 13 for lifting and lowering the upper lid, which are provided in parallel on both sides, so that the plates 11 are raised and lowered while maintaining their respective parallel states.

FIGS. 4A and 4B show a side view of the magazine 1 as seen from the side of the parallel hoisting auxiliary device 13 a and Fig. 5 shows the magazine 1 in a side view as seen from the parallel hoisting auxiliary device 13 b on the other side. FIG. 4B illustrates a state in wel chem the plates are separated.

A side plate 134 a of the parallel lifting device 13 a is seen on the side of the bottom plate 15 of the magazine 1 , and a side plate 133 a is provided on the side of the upper cover 16 . In the side plates 133 a and 134 a, guide bores 136 a and 137 a are formed, which extend in the horizontal direction. The bottom plate 15 and the upper cover 16 are connected to each other by a first connecting plate 131 a and a second connecting plate 132 a, which are rotated by means of a shaft 135 a and are arranged in a cross shape. Specifically, one end of the first connecting plate 131 a and the other end thereof with the side plate 133 a and the guide hole 137 a of the side plate 134 a and the other of the second connecting plate 132 a and the other end thereof are each with the side plate 134 a and the guide bore 136 a verbun the side plate 133 a.

A side plate 134 b of the parallel lifting auxiliary device 13 b is seen on the side of the bottom plate 15 of the magazine 1 before, and a side plate 133 b thereof is provided on the side of the top cover 16 . The guide holes 136 b and 137 b, which he stretch in the horizontal direction, are formed in the side plates 133 b and 134 b, respectively. The bottom plate 15 and the upper cover 16 are connected to each other by a first connecting plate 131 b and a second connecting plate 132 b, which are rotated by means of a shaft 135 b and are arranged in a cross shape. Specifically, one end of the first connecting plate 131 b and the other end thereof are each connected to the side plate 133 b and the guide hole 137 b of the side plate 134 b, and the other end of the second connecting plate 132 b and the other end thereof are each with the side plate 134 b and the guide bore 136 b of the side plate 133 b connected.

It follows that in a state in which the limitation of the separation by the separation-limiting members 15 a and 15 b is released that when an upward force is applied to the upper cover 16 , the connecting plates 131 a, 131 b, 132 a and 132 b are raised with their respective ends along the guide holes 136 a, 136 b, 137 a and 137 b, whereby the upper cover 16 is moved in parallel. The guide cylinders 16 b and 16 b are each formed so that they correspond to the guide holes 11 e and 11 f in the upper cover 16 , and the plate 11 rises and falls, being guided by the guide cylinders 16 b and 16 b.

FIG. 6 shows a top view of a state in which the magazine 1 is loaded in the space of the player part 2 accommodating the magazine 1 . Fig. 7 is a plan view in which the magazine 1 and the player body 5 are removed, mainly showing the player chassis 3 and the Hebemecha mechanism 4 , which is arranged on the two side surfaces of the chassis. On the underside of the base plate 15 of the magazine 1 , two grooves 15 d and 15 e are formed in the direction from front to back. If the magazine 1 is included in the player part 2 , the grooves 15 d and 15 e and the guide projections 3 c, 3 c and 3 c ', which are formed in the player chassis 3 , are in engagement with each other.

A locking plate 6 for locking the magazine 1 is provided on the back of the player chassis 3 . A first jump 6 a protrudes into the receiving space, and is guided in a guide opening 3 e, which extends in the longitudinal direction, which is formed in the player chassis 3 , and a second projection 6 b also protrudes into the receiving space, and is guided in an L-shaped guide opening 3 d, which he stretches in the direction from front to back and at its rear end between the guide projections 3 c and 3 c is bent to the right (ie a position corresponding to the groove 15 d) .

The locking plate 6 is stretched forward by a spring 6 c. If the magazine 1 is loaded into the receiving space, the first projection 6 a is pressed against the biasing force of the spring 6 c at its rear end, so that the locking plate 6 is moved backwards as shown in FIG. 7. It follows that the second projection 6 b enters the part of the guide opening 6 d bent to the right. The bent to the right part is located in a position corresponding to an engaging groove 15 d '(see Fig. 6) of the groove 15 d in the magazine 1. The second projection 6 b enters the one-hand groove 15 d 'to lock the magazine 1 . The ge locked state of the magazine 1 is detected by a switch 100 , which is depressed by the locking plate 6 .

Arc-shaped holes 16 a and 16 a correspond to the rotating areas of the boundary chips 151 a and 151 b in the separation limit elements 15 a and 15 b described above, and are formed in the upper cover 16 of the magazine 1 . The separation limiting elements 15 a and 15 b each have engaging elements (not shown) which protrude in the direction of the grooves 15 d and 15 e. When the magazine 1 is loaded into the player receiving space, the engaging elements are seen by the guide projection 3 c 'and the guide projection 3 c seen on the front in FIG. 3 , so that the separation elements 15 a and 15 b can be rotated. The Begren wetting chips 151 a and 151 b are in the circular openings 16 a and a positioned 16 that they do not engage with the upper cover 16 into engagement to a Ver tikalbewegung the top cover to permit 16, as shown in Fig. 6 is shown.

Furthermore, FIG. 6, as the guide projections 5a projecting from the side surfaces of the player main part 5, respectively to the vertical guide grooves 3 b in the player chassis 3 and the stepped grooves 41 c of the Hebegleit plates are engaged 41 in the lifting mechanism 4. In the player body 5 , when the lift slide plates 41 slide forward and backward, a position at the height at which the guide projection 5 a is held in the step-shaped groove 41 c is changed and the guide projection 5 a is in the vertical guide groove 3 b by the change is moving. Therefore, the player body 5 rises and falls.

Fig. 8A is a side view of the player part 2 from the right and Fig. 8B is a side view of the same from the left. The lifting slide plates 41 in the lifting mechanism 4 are arranged on the side surfaces thereof. The lift slide plate 41 on the right side is designated by the reference number 411 , and the lift slide plate 41 on the left side is designated by the reference number 412 . The Füh approximately openings 41 a are each formed in the direction from front to back of the lift slide plates 41 ( 411 , 412 ), so that the lift slide plates 41 are moved when they are moved backwards or forwards by a projection 3 a on a side surface of the player chassis 3 is leading.

On a top edge of the lift slide plate 411 , a rack 41 b is formed, and with the rack 41 b, a predetermined gear of a group of gears 42 is engaged.

The driving force of a drive motor 43 is transmitted to the He accompanying plate 411 via a group of gears 42 , and the lift slide plate 411 is moved back and forth. The back and forth movement of the lifting slide plate 411 is transmitted to the other lifting slide plate 412 via a syn chron connecting lever 44 , which is shown in FIG. 7.

The synchronous connecting lever 44 is constructed so that it is rotated horizontally by means of a shaft 44 a. When the lift slide plate 411 runs forward, the lift slide plate 412 goes backward. Since the running directions of the two lift slide plates are opposite to each other, the step-shaped grooves 41 c of the lift slide plates 411 and 412 are hen opposite each other in upward and downward directions. Fig. 8 shows practically how the upper and lower positions of the guide projections 5 a are changed in accordance with the respective steps of the step-shaped groove 41 c.

Although the player body 5 is raised and lowered by the back and forth movement of the lifting slide plate 411 , the raised and lowered state (which CD corresponds to the height of the player body 5 ) can be determined by the detector slots 411 a, which at predetermined intervals in the Back and forth direction in the lifting slide plate 411 are formed by using a photosensor 102 (see FIG. 7).

When the lift slide plate 411 has advanced to its foremost position, the lock plate 6 is pressed by an actuating member (not shown) of the lift slide plate 411 so that the magazine 1 is ejected. The position of the lift slide plate 411 is determined by the photo sensor 102 as described above. A reference point must be determined for this purpose. A switch 101 shown in FIG. 7 is provided for this purpose, and is set so that the slide plate 411 is operated by a pressure element 411 b when it is in a position corresponding to a portion between the third and fourth CD . Therefore, when the slide plate 411 is further moved after the operation, an output on the photo sensor 102 is detected, and it is determined that the slide plate 411 is in a position corresponding to the fourth CD. The slide plate 411 may in some cases be in a position corresponding to the third CD depending on the direction in which it is moved. If the direction in which the slide plate is moved has previously been determined, however, it is found that the slide plate is in any position.

Fig. 9 is a plan view of the player main part 5. The slidable plates for the plate separation 51 are each slidable forward and backward within the housing side plates 52 provided in the player body 5 . The case side plate on the right side is denoted by the reference number 521 , and the case side plate on the left side is denoted by the reference number 522 . The slidable plate for the plate separation on the right side is denoted by the reference number 511 and the slidable plate for the plate separation on the left side is designated by the reference number 512 .

A drive plate mechanism 53 for synchronously driving the slidable plates for plate separation 511 and 512 is provided on the upper side of the player body 5 . The drive plate mechanism 53 has connecting operation levers 531 and 532 . A right end (on a functional end side) of the link operating lever 532 is connected to an upper surface portion at the rear end of the slidable plate separating plate 511 and is pivoted about a pivot 532 a at the left end of the link operating lever 532 by the back and forth movement of the slidable plate for plate separation 511 rotated. On the other hand, is connected 512, a left end (on the side of the functional end) of the Verbin dung operating lever 531 to the upper surface portion at the rear end of the sliding plate separation for plate and is about a pivot point 531 a at the right end of the connecting operating lever 531 rotates ge to to move the sliding plate for plate separation 512 back and forth.

The connection operating lever 531 and 532 are miteinan connected by a connecting pin 53 a, which goes through the elongated holes 531 b and 532 b, which are formed in their respective central parts. Therefore, when the slidable plate separation plate 511 is moved, the linkage operating lever 532 is moved. If the connection operating lever 532 is moved, the Ver connection operating lever 531 is moved by the connecting pin 53 a. When the link operating lever 531 is moved, the slidable plate for plate separation 512 is moved. The guide pin 53 a is guided by a guide hole 53 b, which is formed so that it extends in the direction from front to back at the top of the player body 5 .

A rack 514 is formed on the outer side surface of the slidable plate for plate separation 511 . A predetermined gear from the group of gears 54 b meshes with the rack 514 . The driving force of the drive motor 54 a is on the movable plate for plate separation 511 on the group of gears 54 b carry over. The slidable plate for the plate separation 511 is slidable back and forth and the other slidable plate for the plate separation 512 is also slidable back and forth with the back and forth movement of the slidable plate 511 .

FIG. 10A is a right side view of the player body 5, and FIG. 10B is a side view showing the left side viewed from the right side perspective.

Figs. 11A and 11B are diagrams for explaining the relationship between the slidable plates for plate separation 51 (511, 512) and the projections 11 a, 11 b and 11 c of the plate 11, and shows that when the third plate 11 CD selected from below is selected, the slidable plates for the plate separation 51 , which are inherently moved back and forth when they are expediently fixed and show the position in which the plate 11 , which is not inherently moved back and forth, presides when it is changed.

Figs. 12A, 12B and 12C illustrate a state just before the plate occurs are separated from one another, is chosen for the case in which the CD is placed on the third plate 11 from below (a state at a time because the magazine 1 is loaded into the Recordin meraum), and FIGS. 13A, 13B, 13C, 14A, 14B, 15A, 15B illustrate a state in which the plate 11 synchronously with the movement of the slidable plates for plate separation 51 is raised and lowered, it being assumed that this follows the state shown in FIG. 12.

The inclined surfaces for the plate separation, which speak before the jumps 11 a and the projections 11 b of the plate 11 ent, are formed on the sliding plate for the plate separation 511 . The inclined surface for the plate separation corresponding to the projection 11 a of the plate 11 is formed on an inside at the rear end of the movable plate for plate separation 511 . Parts of the inclined surfaces for the plate separation corresponding to the projections 11 a and 11 b are described in the order starting from the front.

The upward inclined surfaces 511 b and 511 f of the first sharp edge 51 a ensure such a space that the pickup arm 500 between the plate 11 on which the selected CD rests and the plate 11 in the step under the plate on the other uppermost points, can be recorded (see FIGS. 13A, 13B and 13C).

The first downward sloping surfaces 511 c and 511 g, which join the upward sloping surfaces 511 b and 511 f, ensure such a distance that a supply with the selected CD 12 on the clamping mechanism 55 in recorded pickup arm 500 at its lowest point (see FIGS . 14A and 14B).

The second downward sloping surfaces 511d and 511h join the first downward sloping surfaces 511c and 511g , and separate the plate 11 on which the selected CD 12 rests from the selected CD 12 (see FIG. 15A and 15B).

The upwardly inclined surfaces 511 e and 511 i on the two sharp edges 51 b separate the plate 11 in the step above the plate 11 on which the selected CD rests from the selected CD 12 at its uppermost points (see FIG . 15A and 15B).

Similarly, an inclined surface for the plate separation corresponding to the projections 11 c of the plate 11 on the ver slidable plate for the plate separation 512 is formed. Parts of the inclined surface for the plate separation are described in the order starting from the front. An upward sloping surface 512 b on the first sharp edge 51 a ensures such a distance that the pickup arm 500 can be accommodated, a first downward sloping surface 512 c ensures such a distance that equipment with the CD 12 the clamping-rotating mechanism 55 on the picked-up pick-up arm 500 is possible, a second downwardly inclined surface 512d separates the plate on which the selected CD 12 is placed from the selected CD 12 , and an upwardly inclined surface 512d the second sharp edge 51 b separates the plate 11 in the step above the selected CD 12 from the selected CD 12 .

The corresponding states of the slidable plates for the plate separation 51 are described in the order ben.

In a state shown in Fig. 12, it is a state in which it is caused that the first sharp edge 51 a on the underside of the projections 11 a, 11 b and 11 c of the plate 11 , on which the selected CD is stored, approaches and faces this (a first state).

In the example shown in the Fig. 13 state is a state in which the plate 11 is placed on which the ge selected CD 12, and all the plates 11 in the steps above this plate 11 sharp by the first edge 51 a are raised to the uppermost position (a second state).

The state shown in FIG. 14 is a state in which the plate 11 on which the selected CD 12 is stored and all the plates 11 in the steps above the plate 11 are slightly lowered from the second state by the selected CD 12 to put on the CD table 552 and the second sharp edge 51 b is on the underside of the cracks 11 a, 11 b and 11 c of the plate 11 in the stage above half of the plate 11 on which the selected CD 12 is placed was approximated and opposed to this (a third state).

The state shown in FIG. 15 is a state in which the plate on which the selected CD 12 is stored is slightly lowered from the third state to the plate 11 from the selected CD 12 to separate, and the plate 11 in the step above the plate 11 is raised from the third state by the second sharp edge 51 b (fourth state).

A switch (not shown) which is actuated by the movement of the slidable plate for plate separation 512 is provided in the vicinity of the slidable plate 512 . The switch is used to detect the first to fourth states of the slidable plate for plate separation 512 . When the second state is detected, the pickup arm 500 is turned towards the magazine 1 . When the third state is detected, the clamping claw 553 carries out a clamping process.

Fig. 16 shows a plan view of the player main body 5 and the view shows a portion of the Tonabnehmerarms 500th A part on the front of the housing of the main player part 5 is in the form of a concave circular arc corresponding to the circular arc of the CD 12 . The pickup arm 500 also has a concave arc part corresponding to the concave arc, and is completely contained in the housing. The player main body 5 is raised and lowered by the lifting mechanism 4 in a state in which the pickup arm 500 is completely contained in the housing.

The pickup arm 500 is provided so that it can be rotated horizontally by means of a rotary shaft 500 a. If the Tonabnehmerarm 500 is rotated counterclockwise (see in Fig. 16 ge), the Tonabnehmerarm 500 comes out of the housing to the clamping-rotating mechanism 55 , which is arranged at its end, under the central bore 12 a of the CD 12 to position. At the rear end of the pickup arm 500 is along a circular arc with the center in the rotation shaft 500 a a toothing 500 b ausgebil det. A predetermined gear of a group of gears 57 b in the rotating mechanism 57 is in engagement with the teeth 500 b. The group of gears 57 b receives from a drive motor 57 a, which is arranged in the housing, a driving force to rotate the pickup arm 500 .

FIGS. 18 and 19 are enlarged views in the plan view of the Tonabnehmerarm 500, FIG. 18 lustriert a state without tension in the clamping rotation mechanism 55 il and illu strated FIG. 19 is a state with tension. The pickup arm 500 is provided with a pickup 56 , a pickup moving mechanism 58 , the cocking-rotating mechanism 55 and a cocking control mechanism 9 . The pickup movement mechanism 59 has a screw 58 c, one end of which is supported by a bearing element 58 e, a drive motor 58 a and a group of gears 58 b for transmitting the driving force to the screw 58 c.

A first switch 56 a is provided on the end face of the Tonabneh mers 56 (an end face on the side of the Spann-Drehmecha mechanism 55 ). The switch 56 a is turned on when it touches a projection 58 f, which is formed in the bearing element 58 e. The time at which the first switch 56 a is turned on corresponds to the time when the clamping / rotating mechanism 55 enters into an untensioned state by the clamping control mechanism 9 , as can be seen from FIG. 18. The drive motor 58 a is stopped when the first switch 56 a is turned on.

The tension control mechanism 9 is rotated in a direction A about an axis 9 a, as shown in FIGS . 18 and 19, by being pressed by the press projection 56 b, which is mounted on the pickup 56 , in order to Rotating mechanism 55 to perform a bracing operation. The braced condition is maintained until the pickup arm 500 exits the housing to enter the condition described above, which is shown in FIG. 13. In the state shown in FIG. 14, the tension control mechanism 9 enters a tensioned state. A command to change the clamping control mechanism 9 to the clamping state is issued when the state shown in FIG. 14 (the third state) is detected in the sliding plates for the plate separation 51 by a switch (not shown).

In detail, the drive motor 58 moves the pickup 56 by a detecting toward the outer periphery of the CD to. Movement of the pickup 56 rotates the tension control mechanism 9 in a direction B to enter a tensioned state, as shown in FIG. 19. In the event that the tension control mechanism 9 is rotated in the direction B (corresponding to a position in which the pickup 56 is retracted by approximately 2 mm from the tensioned state), a second switch 91 is turned on in a predetermined position Switch actuator 9 c turned off. At the time when the second switch 91 is turned off, the pickup 56 is positioned below the TOC (table of contents) of the CD 12 .

FIGS. 20 and 21 show the clamping rotation mechanism 55 in longitudinal section, FIG. 20 is a guyed condition and Fig 21 illustrates. A tensioned state. A CD table 552 in the clamping-rotating mechanism 55 is fixed in an axis of rotation 556 a of the rotary motor 556 and is rotated by the rotation of the axes of rotation 50 a.

By fitting onto a cylindrical part of the CD table 552 , a movable clamping part 551 is slidably provided up and down.

A spring 554 is provided to bias the movable clamp member 551 upward between the movable clamp member 551 and the main part of the rotating motor 556 . The movable clamping part 551 and the spring 554 are rotated together with the CD table 552 . A downwardly inclined edge is formed on the outer circumference of the movable clamping part 551 . By the movement to the left in Fig. 20 and 21 (BEWE the direction A supply according to in Fig. 18) of the Actuate the restriction member 9 c in the tension control mechanism 9 be wegbare clamping member 551 is moved downward against the biasing force of the spring 554th

The clamping rotation mechanism 55 has clamping claws 553 with an approximate L-shape (a total of three clamping claws are provided, see FIGS . 18 and 19). The clamping claw 553 is provided at ih rem base end with a rotating shaft 553 a, whose axis is in the horizontal direction. The rotary shaft 553 a is supported by the CD table 552 , so that the clamping claw 553 is rotated vertically. A rear curved surface of the chuck claw 553 abuts the movable chuck 551 . When the movable clamping member 551 is moved down when it is pressed by the actuator 9 c (ie, pressed by a moving force of the pickup mechanism 58 ), the clamping claw 553 is rotated in a direction D by its own weight, the Rotary shaft 553 a is used as the fulcrum. The clamping claw 553 is drawn in.

If, on the other hand, the movable clamping part 551 is moved upward by the spring 554 when the pressure is released by the actuating element 9 c, the movable clamping part 551 presses on the clamping claw 553 and this is rotated in a direction C with the rotary shaft 553 a as the fulcrum. One end of the clamping claw 553 protrudes from the CD table 552 .

The rotation in the direction C of the clamping claw 553 is, which is connected to a predetermined portion of the CD-Ti ULTRASONIC 552 limited by the stop of a stop element 553 b integrally formed on the clamping claw 553,.

The clamping claw 553 , which thus projects from the CD table 552 and is drawn in to tension / unclamp the CD 12 , eliminates the need for a rotatably driven part for pressing the CD 12 from above. It follows that the CD clamping mechanism can be made thin. A tensioning force by the tensioning claw 553 is applied by a motion force of the existing pickup movement mechanism 58 , the construction being simplified compared to the construction in which a mechanism for exerting a driving force for tensioning and tensioning is provided independently of the pickup movement mechanism can be.

FIG. 22B is a view of the underside of the housing which contains the Tonabnehmerarm 500th On the underside of the housing, a vibration damping element 59 is in a position corresponding to the CD 12 in the step below the CD 12 , which has been selected by the sliding plates for the plate separation 51 , and rotatably mounted by means of a pin 592 that it through protrude a turning process in the direction of the magazine 1 and can be drawn in towards the player body 5 . A protruding and retracting control mechanism 59 a which is connected to the vibration damping element 59 is hen on the underside of the slidable plate for plate separation 511 . The projecting and retracting control mechanism 59 a acts such that the vibration damping element 59 protrudes toward the magazine 1 when the sliding plate for the plate separation 511 from the first state (see FIG. 12) to the second state (see FIG wherein causing the Schwingungsdämp Fung element 59 retracts in the direction of the housing when the sliding plate is moved from the second state to the first state. 13) is pushed ver.

Specifically, the projecting and retracting control mechanism 59 a is rotatably formed by means of a shaft 59 b, one end 59 c engaging with an L-shaped groove 511 a (see FIG. 22A) which is in the slidable plate is formed for the plate separation 511 , while at the other end 59 d is connected to the one end 591 of the vibration damping element 559 by means of a pin 59 e. When the sliding plate for the plate separation 511 in a direction X in FIG. 22A (the direction in which a plate separating operation is performed), therefore, the Vorspring- and Einziehsteuermechanismus 59 a reasonable clockwise rotated (FIG. 22B). Accordingly, the vibration damping member is rotated counterclockwise to protrude toward the magazine 1 . As a result of the clockwise rotation of the projection and retraction control mechanism 51 a, one end 59 c enters the long groove part of the L-shaped groove 511 , the above state of the vibration damping element 59 being maintained. A circular arc-shaped recess corresponding to the circular arc shape and the thickness of the peripheral edge of the CD 12 is formed in the vibration damping element 59 . When the vibration damping member 59 protrudes toward the magazine 1 , a circumferential edge of the CD 12 in the step below the selected CD 12 fits into the above-described circular recess to dampen the vibration of the CD 12 combined with holding the CD through the stages of the vertical part 15 e in the bottom plate 15 as shown in Fig. 22C.

On the other hand, if the slidable plate for the plate separation 511 is moved in a direction Y, and the one end 59 c leads into a recess part of the L-shaped groove 511 a, the vibration damping element 59 is contained in the housing due to the spring 593 . The L-shaped groove 511 is formed as indicated by the broken line in FIG. 22A, thereby making it possible to eliminate the need for the spring 593 .

When the plate separation operation for clamping the selected CD 12 has been performed, the slidable plate for the plate separation 511 takes the state shown in FIGS . 13 and 15. In such conditions, there is no Begren wetting of the CD 12, which is positioned at the level below the selected CD 12, compared to its upward movement. When the CD player is used as an equipment in a vehicle, the CD 12 in the step below the selected CD 12 can make an abnormal noise, that is, a rattling when swinging up and down due to the vibrations of the vehicle. Further, when the Tonabnehmerarm 500 enters into the magazine 1 in a state in which the CD 12 jumps in the level below the selected CD 12 Tonabnehmerarm 500 may touch the CD 12 and destroying it.

In the present embodiment, the vibration damping member 59 is provided. The vibration damping element 59 protrudes towards the magazine 1 when a movement from the first state (see FIG. 12) to the second state (see FIG. 13) takes place, as described above. Oscillations and jumps of the CD 12 in the stage below the selected CD 12 can be prevented by the peripheral edge of the CD 12 in step un fits terhalb the selected CD 12 in the circular arc from savings.

Figs. 23 to 28 show a CD player with a vibration damping mechanism of the Tonabnehmerarms 500th

As shown in Fig. 23, the pickup arm 500 comes out of its receiving part to position the CD-Spannmecha mechanism in the central bore of the CD at the time of playing the CD. In a position corresponding to an edge 500 c of the pickup arm 500 in this water position, a stop element 60 is provided. At the impact element 60 is caulked at one end 60 b in the player chassis 3 and is with the other end 60 c to an obe ren cover 7 of the player by means of a screw 8 BEFE Stigt. Furthermore, the pickup arm 500 takes 4 positions in four stages by lifting the player main body 5 by means of the lifting mechanism. In the stop element 60 four recesses 60 a are formed corresponding to the positions in the four stages.

The edge 500 c of the pickup arm 500 is formed in the form of a thin plate to pass into the recess 60 a. In a state in which the edge 500 c fits into the recess 60 a, a gap is formed between them (above and below the edge 500 c and on the side of an end face of the edge 500 c). The width of the gap corresponds to the permissible degree of displacement of the position of the pickup arm 500 at the time of reproduction.

It follows that at the time of playback, the inclination of the pickup arm 500 is prevented and its movement in the up and down and in the horizontal direction (toward the center of the CD) is restricted in a predetermined range by the stop member 60 .

Although the present invention in detail and as illu has been described, it can clearly be seen that these are for illustration and example only and not to limit the scope of the invention serves that only by the appended claims ben is.

Claims (7)

1. CD tensioning mechanism, characterized by
a claw element ( 553 ) which is provided such that it can protrude and be drawn in on the upper side of a CD table ( 552 ) driven by rotary drive means, a CD 12 being tensioned through its central bore ( 12 a),
when the claw ( 553 ) protrudes and is braced when the claw ( 553 ) is retracted,
wherein the claw member ( 553 ) performs the cocking process in synchronism with the pickup moving means for moving a pickup ( 56 ). 2. CD clamping mechanism, characterized by a CD table ( 552 ) on which a CD 12 with a central bore ( 12 a) is placed, which is rotated by rotary drive means;
a claw member ( 553 ) which is provided so that it can protrude from the top of the CD table ( 552 ) and retracted to tension the CD 12 through the central bore ( 12 a) when it protrudes, and the Tension the CD 12 when it is drawn in;
a movable chuck ( 551 ) provided along the axis of rotation of the CD table ( 552 ) to cause the claw member ( 553 ) to be advanced and retracted by sliding;
Biasing means ( 554 ) for biasing the movable clamping member ( 551 ) in the direction in which the claw member ( 553 ) protrudes;
Pickup moving means for moving a pickup ( 56 ); and
a tension control mechanism which, when pressed by a pressure element provided in the tone pickup, is moved into the position in which the pickup ( 56 ) is located near the CD table ( 552 ), around the movable tensioning portion in the direction to move in which the claw element is retracted. 3. CD tensioning mechanism according to claim 2, characterized in that a switch is further provided which is moved with the pickup to the strained state depending on whether the switch is arranged by a switch pressure element which is in the vicinity of the CD table is pressed or not to check and stop the movement of the pickup ( 56 ) by the pickup moving means when the switch is operated. 4. A CD tensioning mechanism according to claim 2, further characterized by a scarf ter operated by the tensioning control mechanism when the pickup is moved in the direction away from the CD table ( 552 ), and a lens portion of the pickup in one of the TOC (Table of contents) corresponding position. 5. CD player with
a magazine having a number of plates ( 11 ) on which a number of CDs are individually recorded;
a pickup arm ( 500 ) which is connected to a CD table ( 552 ),
a CD tensioning mechanism ( 55 ) and a pickup ( 56 ) is provided;
Motion drive means for moving the pickup arm ( 500 ); and
Plate separating means ( 51 ) for moving the plates ( 11 ) up and down in order to achieve a state in which the pickup arm ( 500 ) can enter the magazine ( 1 ),
further characterized by vibration damping means ( 59 ) to hold the CD 12 , which is positioned below the pickup arm ( 500 ), in synchronism with the movement of the pickup arm on the plates ( 11 ) (the playback position). 6. CD player with
a magazine having a number of plates ( 11 ) on which a number of CDs ( 12 ) are individually recorded;
a pickup arm ( 500 ) which is equipped with a CD table, a CD clamping mechanism ( 55 ) and a pickup ( 56 ); and
Plate separating means for moving the plates up and down to get into a state in which the pickup arm can enter the magazine,
characterized in that
a projection ( 11 a, 11 b, 11 c) is provided on a side part of each plate ( 11 ),
the plate separating means ( 51 ) have a sliding plate ( 511 , 512 ) which can be moved back and forth, and the sliding plate ( 511 , 512 ) has a first sharp edge ( 511 b) and a second sharp edge ( 511 e) and is designed so that successively
a first state in which the first sharp edge ( 511 b) by moving to the lower part of the projection ( 11 a, 11 b, 11 c) of the plate ( 11 ) on which the selected CD 12 is placed, is approximated and this lies opposite;
a second state in which the plate ( 11 ) on which the selected CD 12 is placed and all plates ( 11 ) in the steps above are raised to their uppermost position by the first sharp edge;
a third state in which the plate ( 11 ), on which chem the selected CD 12 is stored, and all plates ( 11 ) in the steps above this plate from the second state are slightly lowered to the selected CD 12 on To put CD table 552 , and the second sharp edge ( 511 e) to a lower part of the projection ( 11 a, 11 b, 11 c) of the plate in the step above the plate on which the selected CD is placed, is approximated and facing this, and
a fourth state is assumed, in which the plate ( 11 ) on which the selected CD is placed is slightly lowered from the third state in order to separate the plate ( 11 ) from the selected CD 12 , while the plate is in a step above of the plate is raised by the second sharp edge ( 511 e) starting from the third state. 7. CD player with
a magazine containing a number of plates ( 11 ) on which a number of CDs ( 12 ) are individually stored;
a pickup arm ( 500 ) equipped with a CD table ( 552 ), a CD clamping mechanism ( 55 ) and a pickup ( 56 );
Rotary drive means for horizontally rotating the Tonabneh merarms ( 500 ), one end of which is mounted to pivot the Tonababeararm ( 500 ) from the playback position, and
Plate separating means for moving the plates ( 11 ) up and down so that the pickup arm ( 500 ) can enter the magazine ( 1 ),
further characterized by limiting means ( 60 ) for limiting the vibration of the pickup arm ( 500 ) in the playback position.